Bus or car window construction



arch 3, 1936.,

N O I T C U R T S Kw NC uw HD CN I SW .Dn JA C Dn O S U B original Filed Jan. 11e,l 1934 2 Sheets-Sheet l INVENTOR. EQHLJNK.

5; 04 www U m5 EF1-1 BY A TTORNEYS.

March 3, i936. J. scHUNK l `BUS OR CAR WINDOW CONSTRUCTION Original Filed Jan. l2, 1934 2 Sheets-shewI 2 INVENTORA. LlmfiFl-x 5B1-1 BY UNF' ' A TTORNEYS.

Patented Mar. 3, 1936- UNITED STATES PATENT YCFFICE National Lock vWasher Company, Newark, N. J., a corporation ofv New Jersey Original application January 12, 1934, Serial' No.

706,367. Divided and thisapplication"Novem-v ber 23, 1934, Serial No. 754,438

4 Claims.

The present invention relates to a bus or car window construction, and the present application is a division ofA my application for Sash lock for bus or car window construction, Serial No. 706,367, iiled January l2, 1934. It has for' its object a window structure in which a sash lock may be conveniently incorporated in the bottom rail of a window sash, and whereby the sash lock will be inconspicuousyeasy to'operate, efficient in operation, and in which the operating parts will at all timesbe held against rattling and'vi-` bration. It is proposed to providea sash lock adapted to be incorporated as an inherent part of a'bottom rail of known design, and particularly of the type as disclosed in the Letters Patent for Bus or car window construction in the name of T. G. Conway, S. E. Blessin and J. Schunk, No. 1,976,773, dated October 16, 1934, without the necessity for materially altering such bottom rail construction.

It is further proposed to provide a Window construction in which the latch casing is provided as a part'of the structure of the side strap of the sash, and which will constitute means for connecting theside strap to the bottomv rail. Another object is to provide a window construction in which the sash lock parts may be readily assembled as a unit-within thebottom rail, and also may be readily removed as aunit. A further object is to provide a `window construction in which the sash lock plunger'is disposedV and movable substantially in the vertical plane of the sash, and which isadapted to cooperate with a rack disposed in the side channel inv which the sash slides, and which is also substantially in the central vertical plane of the sash, to the end that the sash lock is disposed -within `a minimum thickness, and a window' construction is provided which is compact, neat in appearance,-and of maximum clear vision, all features highly desirable in bus or car window construction.

With the above and other objects in View embodiments of the invention are shown inthe-accompanying drawngsjand these embodiments will be hereinafter more fully'described with reference thereto, and the invention will be nally pointed out inthe claims.

In the drawings:

Fig. 1 is a fragmentary front elevation showingv the lower corner of a window construction in which is incorporated-a vsash lock,` according to the exemplary illustrated embodiment of my invention.

Fig. 2 -is a horizontal sectional View,4 taken Fig.` 3 is avertical sectional View. taken along the line 3-3 of Figi 2,-the1lock plunger and lits connected parts rand also the sash glass, being shown `in elevation.

f Fig. 4-

a horizontal sectional plan view,'taken along' the line; 2-3-2 of- Fig. 1; but with the sash glass removed.

Fig. 5 is a vertical sectionalfview, enlarged, takenralongthe line 5-5'of Fig. 1.

Fig. 6 is a vertical sectional view, enlarged, taken along the line 6--6 of Fig. 1.

Fig. 7 is a-perspective view of the lower end of the side strap having the sash lock casing member secured thereto.

Fig.` 8 isaperspective view of the lock plunger and connected parts.

Fig. 9 is a perspective view of the stop post employed.

Fig. 10 is a-perspective view of the end portion of vthe bottom rail.

Fig. 11v isl an end elevation of the lower end of the side strap shown in Fig. 7.

Fig. 12 is a fragmentary stop plan view of a modified form of' plunger and connected parts.

Fig. 13 -is a -top plan view of a modied front of stop post.

Similar reference characters indicate corresponding parts throughout the several gures of the drawings.

'Referring -to the drawings, the window sash according to my invention, and with which a sash lock is-adapted to be incorporated, comprises a sash g'lass I having a top rail (not shown), a bottom rail 2, and afpair of vertical side straps 3 connecting the top-and bottom rails, only one of these straps beingv shown. The side straps are-adapted `to have verticalY sliding movement in the channels mounted on the side posts, Vhereinafter more fully refer-red to.

The bottom rail 2 is'ofA channel shape to receive thelower edge of the sash glass. Upon the inner surface ofe'ach side'of the channel longitudinally extending reinforcing ribs 4 4 are provided intermediate the top and-bottom of the channel, and in the baseof the channel there is provided a longitudinalgroove 5 of'corresponding width to the spacing of the ribs'd-"Jl, there`v being longitudinally extending grooves or recesses 6 6 in the respective sides oil the channel between the rib-s 44and the longitudinal groove 5. The edge of the glass l is bound =withf glazing `tape 1, and when inserted in the channel of the' rail the ribsf 4-4 act as stops to limit the depth to'which the glass may lise-engaged. According to' my invention the sashI lockis adapted to --be inserted-and hou-sed within the channel beneath the sash glass, and in mounting and connecting the same the Sides of the channel are drawn into tight engaging relation with the glass, as will presently more fully appear. Within a T-groove 8 in the lower end of the rail there is interlockingly engaged the T-rib 9 of a sealing stripIIl, of rubber, felt or other suitable sealing material, for engaging upon the sill II, a slot I2 being formed in the under surface of said strip for rendering the strip more flexible.

The side strap 3 is in the form of a U-shape channel, and is adapted to receive the vertical edge of the glass, its vertical edges being bent outwardly and rearwardly, as at I4-I 4, to engage .the edge of the U-shape piece of facing material I 5, which is cemented, riveted or otherwise suitably secured about the' side strap, this material being of a suitable composition similar to felt or leather as regards its wearing and sealing qualities and adapted to have easy sliding engagement in the side post channel.

The lower end of the side strap has secured to it a tubular casing member I6 of rectangular cross section. For this purpose a pair of angle brackets I1-II are secured to the sides of the casing by spot-welding or other suitable means, these brackets being engaged through slots I8-I 8 in the forward edges of the side strap having their vertical portions engaged with the outer side surfaces of the side strap and secured thereto by spot-welding or other suitable means. The lower portion of the side strap has its sides slightly contracted, as indicated by the ollset bends I9-I 3 in Figs. '7 and 8, so that the inner surfaces of the side strap are substantially flush with the vertical inner surfaces of the casing I6, while the outer surfaces above the offset bends I9-I9 are substantially ilush with the outer surfaces of the brackets I1. A slot 20 is provided in the rear surface of the side strap in registering alignment with the passage through the casing I6 and a similar slot 2l is also provided in the facing material I5 for permitting the end of the lock plunger to pass through, as will presently more fully appear. Holes 22 extend through the side straps I1 and the casing I6 for receiving the bolts employed in assembling the parts, as hereinafter more fully referred to.

The sash lock plunger 23 is in the form of an elongated rectangular cross-section bar having a beveled rack engaging nose 24 at its outer end and having a pair of guide slots 25 and 26 between its ends. A notch 21 is provided near its inner end and is adapted to be engaged by the lug 28 of the operating lever 29, hereinafter more fully referred to. An extension rod 30 is provided upon the inner end of the plunger and has engaged thereon a U-shaped straddler or pressure member 3l, an aperture 32 being provided in the intermediate portion of said member for sliding engagement upon the rod, and the sides ofthe member embracing the end of the plunger. The straddler member is normally pressed forwardly toward the end of the plunger by means of the plunger spring 33 disposed aboutthe rod 3U between the straddler member and a washer 34 slidably mounted upon the end of the rod and retained thereon by means of an enlargement 35 formed upon the end of the rod. It should be noted that the enlargement 35 serves to retain the washer spring and straddler member in place upon the plunger when these parts are in disassembled relation as a unit. In the assembled relation in the sash rail the rod 30 is engaged through the passage 36 of a stop post 31 secured in the groove 5 of the rail by means of a screw 38, this part being secured before attachment of the rubber sealing strip I0. The passage 36 is of larger diameter than the enlargement 36 so that the latter can be readily passed through it when assembling and disassembling the plunger and connected parts. In the assembled relation of the parts the washer 34 abuts the stop post compressing the spring 33, the stop post acting as a fixed part against which the spring reacts.

The straddler member 3| is pressed back in the assembled relation, as shown in Figs. 3 and 4, so that its forward edges are substantially in line with or slightly forward of the edge of the recess 21, and normally presses against the lever lug 28, which in turn is pressed against the opposed side of the recess 21. In this way the lock parts and the operating lever are at all times held against looseness and rattling under pressure of the spring 33, the straddler member being so arranged that it takes up all lost motion and compensates for wear and variations in the parts. This condition obtains even after considerable wear upon the parts and also under the continuous vibration to which the parts are subjected in the usual bus and car installations.

The plunger and its connected parts are assembled as a unit in the sash rail 2 with the side strap removed. Thereupon the side strap is connected by rst engaging the casing member I6 over the plunger and then forcing the casing member into the channel of the bottom rail 2, the longitudinal ribs 4-4 engaging the sides of the casing at'its upper portion and the lower portion of the casing being engaged in the groove 5, while the portions of the brackets I1 at the sides of the casing engage in the grooves 6 6, as clearly shown in Fig. 5. As the side rail is forced t0 its limit position against the end of the bottom rail the nose end 24 of the plunger projects through the slots 20 and 2I of the side strap. The parts are then secured in place by means of transversely disposed binding screws 39 and 4U, each comprising an interiorly threaded socket screw part and an exteriorly threaded screw part to engage the socket part, suitable countersunk holes 60 being provided in the bottom rail to receive these parts.

The binding screw 39 extends through the holes 22 in the casing I6 and brackets I1 and also extends through the slot 26 of the plunger, this screw serving to secure the side strap against displacement and also providing a movement limiting guide for the plunger. The binding screw 40 extends through the slot 26 of the plunger, and this binding screw is also utilized for securing one end of the operating lever casing, as will presently more fully appear. The engagement of the binding screws not only secures the parts of the sash lock in place but draws the sides of the bottom rail tightly against the sides of the glass and also against the sides of the casing I6 and bracket I1 so that a rigidly assembled structure results.

The operating lever casing 4I is of substantially U-shape having an attaching ear portion 42 at one end which is secured to the side of the bottom rail by the binding screw 4B and a relatively elongated base portion at its other end which is secured to the bottom rail by a binding screw 44. A window lift flange 45 is formed at the upper edge of the base 43 and is disposed beneath the finger engaging extension portion 46 of the operating lever 29, so that the latter may be convenientlyxoperated byengaging the thumbzwith .its upperside and the fingers withlthe `lower side ofthelift flange 45. The fulcrum lug 41 4of the operating lever 29 is formed upon;.its.facez near its .lower end and is pivotally seated in a recess 48 formed in the casing. The lug 28 of the operating lever extends to the interior of the bottom rail into engagement with the recess 2l of the plunger through an arcuate slot 49 formed in the side of the rail, and between the inner surface of the lever and the side surface of the rail there is provided a. wear plate 50, also having an arcuate slot 5l registering with the slot 49, and provided with right angularly bent ends 52-52 which engage the ends of the casing. This wear plate protects the rail surface from the rubbing action of the lower part of the operating lever when the same is moved to operate the lock plunger.

'I'he channel within which the side strap of the sash is slidably mounted comprises an outside stop 53 secured to the side post and an inside stop 54 removably connected to the outside stop constituting therewith a channel. Within this channel there is provided a rack 55 with which the lock plunger engages. It will be understood that the particular form of the side post channel and the means by which the rack is mounted therein forms no part of the present invention, and that these parts may be of any desirable construction. As illustrated, the rack is mounted within a channel strip 5B, being secured to the base of this strip by any suitable means as spotwelding or rivets. The edges of the strip are bent inwardly, as at 51-51, and bear upon the facing material l5, and a spring 58 is disposed between the base of the outside stop 53 and the base of the channel strip and presses the latter into snug engagement with the facing strip I5. This construction provides a relatively narrow channel in which the rack is in alignment with the central vertical plane of the sash and is also effectually concealed.

In Figs. 12 and 13 I have shown a modified form of plunger and stop post adapted to be assembled in or removed from the sash rail without removal of the side strap. The plunger 23" is swedged or otherwise reduced in thickness, as at 6l, at its inner end adjacent the notch 21", the straddler or pressure member 3|" which engages over this portion being of a thickness no greater than the thickness of the plunger. The spring 33" disposed about the extension rod 30" is of a diameter no greater than the thickness of the plunger, as is also the washer 34" retained upon the rod by the enlargement 35". These parts may thus be inserted in and removed from the rail through the slot 20 in the side strap and through the tubular casing I6 without removing these parts. The stop post 31" having a passage 36", through which the rod 30" engages, in the assembled relation, is also of such reduced thickness that it may be assembled or removed through the slot 20.

I have illustrated and described preferred and satisfactory embodiments of the invention, but it will be obvious that changes may be made therein, within the spirit and scope thereof, as defined in the appended claims.

Having thus described my invention what I claim and desire to secure by Letters Patent istl. In a sash lock window construction, a horizontal rail having a longitudinally extending opening therein, a vertical side strap, a right angularly projecting tubular member of rectangular .cross-section having side :walls v.and top and-botatuting alock casing for receiving a longitudinally movable lock plunger .of :rectangular vcross-section disposed in said opening andlslidably .engaged .in said tubular member in sliding engagement at its four surfaces with the side and bottom and top walls thereof and projected from one end.

2. In a sash lock window construction, a horizontal rail having a longitudinally extending opening therein, a vertical side strap, a right angularly projecting tubular member of rectangular cross section having side walls and top and bottom walls secured to said side strap and engaged in the opening of said rail at one end and constituting a lock casing for receiving a longitudinally movable lock plunger of rectangular cross section disposed in said opening and slidably engaged in said tubular member in sliding engagement at its four surfaces with the side and top and bottom walls thereof and projected from one end, and removable means secured to said rail extending transversely through said tubular member intermediate its top and bottom walls to secure it in said opening and disposed in the path of said plunger and adapted to limit its projecting movement.

3. In a sash lock for window construction, a horizontal glass receiving rail having a longitudinally extending channel therein, said glass being disposed in the upper portion of said channel and the lower portion constituting a longitudinal opening, there being longitudinally extending grooves in the side walls of said lower portion, a vertical channel side strap for receiving the vertical edge of the glass, a right angularly projecting tubular member of rectangular cross section having side walls and top and bottom walls, right angular brace members secured at their horizontal legs at each side of said tubular member and secured at the vertical legs to said side strap, said tubular member being engaged in said longitudinal opening of said rail at one end with said horizontal legs of said brace members engaged in said grooves, said tubular member constituting a lock casing for receiving a longitudinally movable lock plunger of rectangular cross section disposed in said opening and slidably engaged in said tubular member in sliding engagement at its four surfaces with the side and top and bottom walls thereof and projected from one end, and removable means secured between the sides of said rail extending through the tubular member to secure it in said opening and to bind the sides of said rail against said glass, the engagement of said horizontal legs of said brace members with said grooves adapted to prevent vertical displacement of said tubular member.

4. In a sash lock window construction, a horizontal rail having a longitudinally extending opening therein, there being longitudinally extending grooves in the side walls of said opening, a vertical side strap, a right angularly projecting tubular member of rectangular cross section having side walls and top and bottom walls, right angular brace members secured at their horizontal legs at each side of said tubular member and secured at their vertical legs to said side strap, said tubular member being engaged in the opening of said rail at one end and constituting a lock casing for receiving a longitudinally movable lock plunger of rectangular cross section disposed in said opening and slidably engaged in placement, the engagement of said .horizontal said tubular member in sliding engagement at its legs of said brace members With said grooves four surfaces With the side and top and bottom `adapted to prevent Vertical displacement of said Walls thereof and projected from one end, means tubular member.

secured to said rail adapted to secure said tubular Y JOSEPH SCHUNK. member in said opening against longitudinal dis- 

